Close all sockets on shutdown

Sources/App/Management/SQLiteDatabase.swift

@@ -174,4 +174,8 @@ final class SQLiteDatabase {
         }
         return tables.play(card: card, player: player)
     }
+    
+    func disconnectAllSockets() {
+        tables.disconnectAllSockets()
+    }
 }

Sources/App/Management/TableManagement.swift

@@ -199,4 +199,8 @@ final class TableManagement {
         // TODO: Save new table
         return .success
     }
+    
+    func disconnectAllSockets() {
+        tables.values.forEach { $0.disconnectAllPlayers() }
+    }
 }